Spring-support for hammocks.



A. P. SANBORN, JB. SPRING SUPPORT PGR HAMMOGKS.

APPLIUATION FILED JUNE 1, 1910. 965,838. A

Patented July 26, 1910.

521% I y I# g 10 22, if' -l l I l I Z0 f, J i *51: ,1% L l IN ANDREW F. SANBORN, JR., 0F PHILADELPHIA, PENNSYLVANIA. j

Specification of Letters Patent.

Patenten July 2c, 1910.

Application led June 1, 1910. Serial No. 564,450.

To all whom 'it may concern: j

Be it known that I, ANDREW F. SANoRN, Jr., a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Sprin -Supports for Hammocks, of which the fol owing is a specification.

My invention relates to improvements in spring supports for hammocks, the object of the invention being to provide an attachment which may be used in connection with any ordinary hammock, and which will give an elastic support to the hammock rendering the latter more comfortable to the user.

`A further object is to provide an improved device of this character in which the tension of thespring may be adjusted to suit conditions, and which permits the removal and replacing of a worn or broken spring whenever desired.

With these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1, is a view in elevation illustrating my improvements. Fig. 2, is a view in longitudinal section. Fig. 3, is an enlarged view in cross section on the line 3*-3 of Fig. 2. Fig. L1, is a similar view in cross section on the line 4.-4 of Fig. 2, and Fig. 5, is an enlarged view in side elevation of the adjusting nut. j

1, represents a cylindrical casing having an open end and a closed end, and a loop or hanger 2 is fixed to or made integral with the closed end of the casing. The open end of the casing is provided with internal screw-threads 3, and longitudinal slots 4 are provided in the casing, as clearly shown.

5, represents a rod which extends longitudinally through the casing and is provided near its inner end with an angular portion 6 to enter an angular central opening in a disk l7, and the extreme end of the rod 5 is screw-threaded to receive a nut 8 screwed against the disk 7 to hold it rigidly in place, it being understood that as the main portion of rod 5 is cylindrical, shoulders will be formed at the juncture of the cylindrical portion of the rod `and the angular portion 6, and thenut 8 will hold the disk tightly .against these shoulders.

9., represents my improved adjusting nut which is provided with a central opening to accommodate rod 5, and on its outer face at opposite sides of the opening, the nut 9 yis provided with wings 10 to permit it to be readily grasped between the fingers and turned.

Located within casing 1, around rod 5, is a coiled spring 11, one end of which is bent at an. angle forming a lug 12 projected through an opening 13 in disk 7. The other end of the spring acts as a ratchet dog and bears against a circular series of ratchet teeth 14 on the inner face of nut 9, so that while the spring permits this nut to turn from left to right to move the nut inward and increase the tension of the spring, it prevents any retrograde movement of the nut and securely locks it in the position to which it is adjusted. 4

If it is desired to remove the nutl or to lighten the tension, a suitable tool may be inserted through one of the slots 4 in casing 1 to hold back the spring from engagement with the nut, while lthe latter is being screwed out. A hook 15 is provided on the free end of rod 5, which is adapted to receve a loop on a hammock, while the loop 2 above referred to is adapted to be caught over a support. A weight on the hammock moves the disk 7l toward the nait 9 and compresses spring 11, and this affords an elastic support for the hammock which renders the latter extremely comfortable to the occuant. p Various slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a device ofthe character described, the combination with a cylindrical casing havin a closed end and an internally screw` threa ed openl end, a longitudinal rod located within the casing, connecting devices at the end of the casing and on said rod, a disk secured on the inner end of the rod, a nut screwed into the o en end of the casing, a coiled spring around) the rod between the disk and said nut, one end of said spring sel cured to the disk, and a circular series of havin ratchet teeth on the inner face of the nut against which the spring bears, substantially as described.

2. In a device of the character described, the combination with a cylindrical casing a closed end, an internally screwthrea ed open end and longitudinal slots,

, of a rod extending longitudinally in the casing, said rod having an angular portion ad- 'acent its inner end, and a screw-threaded inner end, a disk having an angular central openin positioned on the angular portion of said ro a nut screwed on the threaded end of said rod and bearing against said disk, said disk having an opening therein, a coiled spring located within the casing i ANDREW F. SANBORN, JR. Witnesses:

R. H. KRENKEL,

C. E. Po'rrs. 

